Brand New Production M3 Grease Gun Magazines! These are the magazines you have been waiting for and hearing your friends rave about. They are the absolute finest M3 magazines ever produced!

• Capacity: 30rds
• Caliber: .45ACP
• Condition: New
• Brand: KeepShooting® Products
• Construction: Blued Steel

This magazine will work with the following firearms without any modification:

• MasterPiece Arms MPA-10 Pistols and Carbines
• Vulcan Arms MAC-10 Pistols
• RPB Open-Bolt MAC-10 Pistols in .45acp
• Ingram MAC-10 Submachine Guns in .45acp that have upgraded mag catches.
• Bazooka Brothers AR-45
• UZI Pistol / Rifle / Machinegun with .45acp lower

This magazine will require modification to work in the following firearm:

• Cavalry Arms CAV-15 lower was designed using undersized M3 magazines. Please contact Cavalry Arms for instructions on what to remove from our magazines for them to work.

Why should you purchase this magazine?

Our magazines have been designed with 100% reliability being our primary focus. We did not set out to make an identical copy of the USGI magazine as we have never found two USGI magazines that were identical. Our customers have told us reliability is by far the most important thing, and we share their view. Some of the improvements we made when manufacturing our magazines:

• Measurements were taken on several dozen USGI magazines to determine the mean average for critical parts, such as the width of the magazine lips, degree of follower, location of the magazine release engagement, and overall dimensions. This has resulted in a magazine that is sized perfectly for nearly every gun without modification.
• Enhancements were taken in design and manufacturing of the magazine spring, follower, and interior magazine body. All surfaces are deburred and polished prior to being finished to ensure smooth operations. Magazine spring produces higher tension for quicker feeding of ammunition in high rate-of-fire firearms such as full auto MAC-10s.
• Over 7,000 of these magazines have been sold, and our customers continue to tell us these are the best magazines available!

Instructions for breakin and use of magazine can be found here.